An important aspect of Feng Shui studies is how light and energy (Chi) enter each space, especially natural light coming from outside.
When a careful mapping of space and its directions is done, and depending on which side of the globe it is on, we can know exactly the quality and quantity of light we have in certain rooms.
For example, generally if a living room is facing south in Portugal, in the northern hemisphere it will certainly have light and heat throughout the day, from sunrise to sunset.
On the other hand, if that same space faces North, it will probably be dark and cold, with a lack of light.
In the east direction, we can benefit from the sunrise light, which is generally good for bedrooms.
To the west direction we are able to watch the sunset, so the living rooms are also great here.

